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Review: Allee effects in social species [PDF]
Journal of Animal Ecology, 2017 Abstract Allee effects have important implications for many aspects of basic and applied ecology. The benefits of aggregation of conspecific individuals are central to Allee effects, which have led to the widely held assumption that social species are more prone to Allee effects. Robust evidence for this assumption, however, remains rare. Furthermore,
Elena Angulo +6 more
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Strong and weak Allee effects and chaotic dynamics in Richards' growths [PDF]
, 2013 In this paper we define and investigate generalized Richards' growth models with strong and weak Allee effects and no Allee effect. We prove the transition from strong Allee effect to no Allee effect, passing through the weak Allee effect, depending on ...
Fournier-Prunaret, Danièle +2 more
core +1 more source
Allee Effect from Parasite Spill-Back [PDF]
The American Naturalist, 2013 The exchange of native pathogens between wild and domesticated animals can lead to novel disease threats to wildlife. However, the dynamics of wild host-parasite systems exposed to a reservoir of domesticated hosts are not well understood. A simple mathematical model reveals that the spill-back of native parasites from domestic to wild hosts may cause ...
Krkosek, Martin +3 more
openaire +4 more sources
Interaction between habitat quality and an Allee-like effect in metapopulations [PDF]
, 2013 We construct a stochastic patch occupancy metapopulation model that incorporates variation in habitat quality and an Allee-like effect. Using some basic results from stochastic ordering, we investigate the effect of habitat degradation on the persistence
Amarasekare +23 more
core +1 more source
Estimating Allee dynamics before they can be observed: polar bears as a case study. [PDF]
PLoS ONE, 2014 Allee effects are an important component in the population dynamics of numerous species. Accounting for these Allee effects in population viability analyses generally requires estimates of low-density population growth rates, but such data are ...
Péter K Molnár +2 more
doaj +1 more source
Extraordinary Sex Ratios: Cultural Effects on Ecological Consequences [PDF]
, 2012 We model sex-structured population dynamics to analyze pairwise competition between groups differing both genetically and culturally. A sex-ratio allele is expressed in the heterogametic sex only, so that assumptions of Fisher's analysis do not apply ...
Ferenc Molnár +3 more
core +8 more sources
Pattern Formation in a Reaction-Diffusion Predator-Prey Model with Weak Allee Effect and Delay
Complexity, 2019 In this paper, we establish a reaction-diffusion predator-prey model with weak Allee effect and delay and analyze the conditions of Turing instability. The effects of Allee effect and delay on pattern formation are discussed by numerical simulation.
Hua Liu +5 more
doaj +1 more source
Stability analysis of a single species logistic model with Allee effect and feedback control
Advances in Difference Equations, 2018 A single species logistic model with Allee effect and feedback control dxdt=rx(1−x)xβ+x−axu,dudt=−bu+cx, $$\begin{aligned}& \frac{dx}{dt} = rx(1-x)\frac{x}{\beta+x}-axu, \\& \frac{du}{dt} = -bu+cx, \end{aligned}$$ where β, r, a, b, and c are all positive
Qifa Lin
doaj +1 more source
High prices for rare species can drive large populations extinct: the anthropogenic Allee effect revisited [PDF]
, 2017 Consumer demand for plant and animal products threatens many populations with extinction. The anthropogenic Allee effect (AAE) proposes that such extinctions can be caused by prices for wildlife products increasing with species rarity.
Holden, Matthew H, McDonald-Madden, Eve
core +2 more sources
Allee-Effect-Induced Instability in a Reaction-Diffusion Predator-Prey Model
Abstract and Applied Analysis, 2013 We investigate the spatiotemporal dynamics induced by Allee effect in a reaction-diffusion predator-prey model. In the case without Allee effect, there is nonexistence of diffusion-driven instability for the model.
Weiming Wang +3 more
doaj +1 more source